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Interdiffusion between the L1(2) trialuminides Al66Ti25Mn9 and Al67Ti25Cr8Concentration-distance profiles obtained from Al66Ti25Mn9/Al67Ti25Cr8 diffusion couples are used to determine the interdiffusion coeffients in the temperature range 1373-1073 K. The couples are treated as pseudobinaries, and the diffusion coefficients are determined using the Matano approach. The results are then used to compute the activation energies for diffusion, and a comparison is made with some existing data for the activation energy for creep of Al22Ti8Fe3.
Document ID
19920054464
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Kumar, K. S.
(Martin Marietta Laboratories Baltimore, MD, United States)
Whittenberger, J. D.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 15, 2013
Publication Date
May 1, 1992
Publication Information
Publication: Journal of Materials Research
Volume: 7
Issue: 5 Ma
ISSN: 0884-2914
Subject Category
Metallic Materials
Accession Number
92A37088
Funding Number(s)
CONTRACT_GRANT: NAS3-26069
Distribution Limits
Public
Copyright
Other

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